Home / 58,788.63-81,128.19-31,931.13

Finding the Fourth Proportional to 58,788.63, 81,128.19 and 31,931.13

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Solution

The fourth proportional to 58,788.63, 81,128.19 and 31,931.13 is: 44,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,788.63 : 81,128.19 = 31,931.13 : x
  2. Step 2: Convert to fraction form
    58,788.63/81,128.19 = 31,931.13/x
  3. Step 3: Cross multiply
    58,788.63x = 81,128.19 × 31,931.13
  4. Step 4: Simplify right side
    58,788.63x = 2,590,514,781.55
  5. Step 5: Solve for x
    x = 2,590,514,781.55/58,788.63
  6. Step 6: Final answer
    x = 44,064.89

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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.