Home / 145,871.04-218,818.80-40,691.28

Finding the Fourth Proportional to 145,871.04, 218,818.80 and 40,691.28

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Solution

The fourth proportional to 145,871.04, 218,818.80 and 40,691.28 is: 61,040.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,871.04 : 218,818.80 = 40,691.28 : x
  2. Step 2: Convert to fraction form
    145,871.04/218,818.80 = 40,691.28/x
  3. Step 3: Cross multiply
    145,871.04x = 218,818.80 × 40,691.28
  4. Step 4: Simplify right side
    145,871.04x = 8,904,017,060.06
  5. Step 5: Solve for x
    x = 8,904,017,060.06/145,871.04
  6. Step 6: Final answer
    x = 61,040.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.