Home / 86,470.74-129,538.31-56,798.55

Finding the Fourth Proportional to 86,470.74, 129,538.31 and 56,798.55

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Solution

The fourth proportional to 86,470.74, 129,538.31 and 56,798.55 is: 85,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,470.74 : 129,538.31 = 56,798.55 : x
  2. Step 2: Convert to fraction form
    86,470.74/129,538.31 = 56,798.55/x
  3. Step 3: Cross multiply
    86,470.74x = 129,538.31 × 56,798.55
  4. Step 4: Simplify right side
    86,470.74x = 7,357,587,893.46
  5. Step 5: Solve for x
    x = 7,357,587,893.46/86,470.74
  6. Step 6: Final answer
    x = 85,087.60

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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.