Home / 78,331.81-108,098.04-42,521.85

Finding the Fourth Proportional to 78,331.81, 108,098.04 and 42,521.85

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Solution

The fourth proportional to 78,331.81, 108,098.04 and 42,521.85 is: 58,680.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,331.81 : 108,098.04 = 42,521.85 : x
  2. Step 2: Convert to fraction form
    78,331.81/108,098.04 = 42,521.85/x
  3. Step 3: Cross multiply
    78,331.81x = 108,098.04 × 42,521.85
  4. Step 4: Simplify right side
    78,331.81x = 4,596,528,642.17
  5. Step 5: Solve for x
    x = 4,596,528,642.17/78,331.81
  6. Step 6: Final answer
    x = 58,680.23

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1.5x scale

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.