Home / 85,081.02-127,398.56-59,985.20

Finding the Fourth Proportional to 85,081.02, 127,398.56 and 59,985.20

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Solution

The fourth proportional to 85,081.02, 127,398.56 and 59,985.20 is: 89,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.02 : 127,398.56 = 59,985.20 : x
  2. Step 2: Convert to fraction form
    85,081.02/127,398.56 = 59,985.20/x
  3. Step 3: Cross multiply
    85,081.02x = 127,398.56 × 59,985.20
  4. Step 4: Simplify right side
    85,081.02x = 7,642,028,101.31
  5. Step 5: Solve for x
    x = 7,642,028,101.31/85,081.02
  6. Step 6: Final answer
    x = 89,820.60

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1.5x scale

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.