Home / 78,741,010.20-118,111,515.30-30,871,954.20

Finding the Fourth Proportional to 78,741,010.20, 118,111,515.30 and 30,871,954.20

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Solution

The fourth proportional to 78,741,010.20, 118,111,515.30 and 30,871,954.20 is: 46,307,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,741,010.20 : 118,111,515.30 = 30,871,954.20 : x
  2. Step 2: Convert to fraction form
    78,741,010.20/118,111,515.30 = 30,871,954.20/x
  3. Step 3: Cross multiply
    78,741,010.20x = 118,111,515.30 × 30,871,954.20
  4. Step 4: Simplify right side
    78,741,010.20x = 3,646,333,290,834,199
  5. Step 5: Solve for x
    x = 3,646,333,290,834,199/78,741,010.20
  6. Step 6: Final answer
    x = 46,307,931.30

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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.