Home / 85,002.16-127,386.60-53,781.52

Finding the Fourth Proportional to 85,002.16, 127,386.60 and 53,781.52

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Solution

The fourth proportional to 85,002.16, 127,386.60 and 53,781.52 is: 80,598.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,002.16 : 127,386.60 = 53,781.52 : x
  2. Step 2: Convert to fraction form
    85,002.16/127,386.60 = 53,781.52/x
  3. Step 3: Cross multiply
    85,002.16x = 127,386.60 × 53,781.52
  4. Step 4: Simplify right side
    85,002.16x = 6,851,044,975.63
  5. Step 5: Solve for x
    x = 6,851,044,975.63/85,002.16
  6. Step 6: Final answer
    x = 80,598.48

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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.