Home / 77,008,839.60-115,513,259.40-31,603,220.40

Finding the Fourth Proportional to 77,008,839.60, 115,513,259.40 and 31,603,220.40

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Solution

The fourth proportional to 77,008,839.60, 115,513,259.40 and 31,603,220.40 is: 47,404,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,008,839.60 : 115,513,259.40 = 31,603,220.40 : x
  2. Step 2: Convert to fraction form
    77,008,839.60/115,513,259.40 = 31,603,220.40/x
  3. Step 3: Cross multiply
    77,008,839.60x = 115,513,259.40 × 31,603,220.40
  4. Step 4: Simplify right side
    77,008,839.60x = 3,650,590,995,940,572
  5. Step 5: Solve for x
    x = 3,650,590,995,940,572/77,008,839.60
  6. Step 6: Final answer
    x = 47,404,830.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.