Home / 85,720.24-118,304.04-47,987.20

Finding the Fourth Proportional to 85,720.24, 118,304.04 and 47,987.20

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Solution

The fourth proportional to 85,720.24, 118,304.04 and 47,987.20 is: 66,228.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,720.24 : 118,304.04 = 47,987.20 : x
  2. Step 2: Convert to fraction form
    85,720.24/118,304.04 = 47,987.20/x
  3. Step 3: Cross multiply
    85,720.24x = 118,304.04 × 47,987.20
  4. Step 4: Simplify right side
    85,720.24x = 5,677,079,628.29
  5. Step 5: Solve for x
    x = 5,677,079,628.29/85,720.24
  6. Step 6: Final answer
    x = 66,228.00

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1.5x scale

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.