Home / 78,312.32-108,070.10-42,502.36

Finding the Fourth Proportional to 78,312.32, 108,070.10 and 42,502.36

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Solution

The fourth proportional to 78,312.32, 108,070.10 and 42,502.36 is: 58,652.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.32 : 108,070.10 = 42,502.36 : x
  2. Step 2: Convert to fraction form
    78,312.32/108,070.10 = 42,502.36/x
  3. Step 3: Cross multiply
    78,312.32x = 108,070.10 × 42,502.36
  4. Step 4: Simplify right side
    78,312.32x = 4,593,234,295.44
  5. Step 5: Solve for x
    x = 4,593,234,295.44/78,312.32
  6. Step 6: Final answer
    x = 58,652.77

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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.