Home / 78,312.28-108,071.01-42,502.30

Finding the Fourth Proportional to 78,312.28, 108,071.01 and 42,502.30

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Solution

The fourth proportional to 78,312.28, 108,071.01 and 42,502.30 is: 58,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.28 : 108,071.01 = 42,502.30 : x
  2. Step 2: Convert to fraction form
    78,312.28/108,071.01 = 42,502.30/x
  3. Step 3: Cross multiply
    78,312.28x = 108,071.01 × 42,502.30
  4. Step 4: Simplify right side
    78,312.28x = 4,593,265,947.97
  5. Step 5: Solve for x
    x = 4,593,265,947.97/78,312.28
  6. Step 6: Final answer
    x = 58,653.21

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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.