Home / 56,151.36-77,490-31,002.48

Finding the Fourth Proportional to 56,151.36, 77,490 and 31,002.48

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Solution

The fourth proportional to 56,151.36, 77,490 and 31,002.48 is: 42,784.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,151.36 : 77,490 = 31,002.48 : x
  2. Step 2: Convert to fraction form
    56,151.36/77,490 = 31,002.48/x
  3. Step 3: Cross multiply
    56,151.36x = 77,490 × 31,002.48
  4. Step 4: Simplify right side
    56,151.36x = 2,402,382,175.20
  5. Step 5: Solve for x
    x = 2,402,382,175.20/56,151.36
  6. Step 6: Final answer
    x = 42,784.04

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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.