Home / 72,897.28-109,175.80-56,124.20

Finding the Fourth Proportional to 72,897.28, 109,175.80 and 56,124.20

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Solution

The fourth proportional to 72,897.28, 109,175.80 and 56,124.20 is: 84,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,897.28 : 109,175.80 = 56,124.20 : x
  2. Step 2: Convert to fraction form
    72,897.28/109,175.80 = 56,124.20/x
  3. Step 3: Cross multiply
    72,897.28x = 109,175.80 × 56,124.20
  4. Step 4: Simplify right side
    72,897.28x = 6,127,404,434.36
  5. Step 5: Solve for x
    x = 6,127,404,434.36/72,897.28
  6. Step 6: Final answer
    x = 84,055.32

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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.