Home / 78,563.16-108,416.96-42,753.16

Finding the Fourth Proportional to 78,563.16, 108,416.96 and 42,753.16

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Solution

The fourth proportional to 78,563.16, 108,416.96 and 42,753.16 is: 58,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.16 : 108,416.96 = 42,753.16 : x
  2. Step 2: Convert to fraction form
    78,563.16/108,416.96 = 42,753.16/x
  3. Step 3: Cross multiply
    78,563.16x = 108,416.96 × 42,753.16
  4. Step 4: Simplify right side
    78,563.16x = 4,635,167,423.83
  5. Step 5: Solve for x
    x = 4,635,167,423.83/78,563.16
  6. Step 6: Final answer
    x = 58,999.25

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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.