Home / 77,109.12-106,422.90-45,271.86

Finding the Fourth Proportional to 77,109.12, 106,422.90 and 45,271.86

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Solution

The fourth proportional to 77,109.12, 106,422.90 and 45,271.86 is: 62,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,109.12 : 106,422.90 = 45,271.86 : x
  2. Step 2: Convert to fraction form
    77,109.12/106,422.90 = 45,271.86/x
  3. Step 3: Cross multiply
    77,109.12x = 106,422.90 × 45,271.86
  4. Step 4: Simplify right side
    77,109.12x = 4,817,962,629.59
  5. Step 5: Solve for x
    x = 4,817,962,629.59/77,109.12
  6. Step 6: Final answer
    x = 62,482.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.