Home / 55,385.32-76,448.10-38,623.72

Finding the Fourth Proportional to 55,385.32, 76,448.10 and 38,623.72

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Solution

The fourth proportional to 55,385.32, 76,448.10 and 38,623.72 is: 53,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,385.32 : 76,448.10 = 38,623.72 : x
  2. Step 2: Convert to fraction form
    55,385.32/76,448.10 = 38,623.72/x
  3. Step 3: Cross multiply
    55,385.32x = 76,448.10 × 38,623.72
  4. Step 4: Simplify right side
    55,385.32x = 2,952,710,008.93
  5. Step 5: Solve for x
    x = 2,952,710,008.93/55,385.32
  6. Step 6: Final answer
    x = 53,312.14

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Double scale
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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.