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Finding the Fourth Proportional to 94,681, 130,663.95 and 54,407.40

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Solution

The fourth proportional to 94,681, 130,663.95 and 54,407.40 is: 75,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,681 : 130,663.95 = 54,407.40 : x
  2. Step 2: Convert to fraction form
    94,681/130,663.95 = 54,407.40/x
  3. Step 3: Cross multiply
    94,681x = 130,663.95 × 54,407.40
  4. Step 4: Simplify right side
    94,681x = 7,109,085,793.23
  5. Step 5: Solve for x
    x = 7,109,085,793.23/94,681
  6. Step 6: Final answer
    x = 75,084.61

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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.