Home / 78,312.48-108,070.98-42,502.20

Finding the Fourth Proportional to 78,312.48, 108,070.98 and 42,502.20

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Solution

The fourth proportional to 78,312.48, 108,070.98 and 42,502.20 is: 58,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.48 : 108,070.98 = 42,502.20 : x
  2. Step 2: Convert to fraction form
    78,312.48/108,070.98 = 42,502.20/x
  3. Step 3: Cross multiply
    78,312.48x = 108,070.98 × 42,502.20
  4. Step 4: Simplify right side
    78,312.48x = 4,593,254,406.16
  5. Step 5: Solve for x
    x = 4,593,254,406.16/78,312.48
  6. Step 6: Final answer
    x = 58,652.90

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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.