Home / 86,660.28-130,038.48-42,287.40

Finding the Fourth Proportional to 86,660.28, 130,038.48 and 42,287.40

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Solution

The fourth proportional to 86,660.28, 130,038.48 and 42,287.40 is: 63,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660.28 : 130,038.48 = 42,287.40 : x
  2. Step 2: Convert to fraction form
    86,660.28/130,038.48 = 42,287.40/x
  3. Step 3: Cross multiply
    86,660.28x = 130,038.48 × 42,287.40
  4. Step 4: Simplify right side
    86,660.28x = 5,498,989,219.15
  5. Step 5: Solve for x
    x = 5,498,989,219.15/86,660.28
  6. Step 6: Final answer
    x = 63,454.55

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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.