Home / 85,689.24-128,312.40-59,117.16

Finding the Fourth Proportional to 85,689.24, 128,312.40 and 59,117.16

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Solution

The fourth proportional to 85,689.24, 128,312.40 and 59,117.16 is: 88,522.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,689.24 : 128,312.40 = 59,117.16 : x
  2. Step 2: Convert to fraction form
    85,689.24/128,312.40 = 59,117.16/x
  3. Step 3: Cross multiply
    85,689.24x = 128,312.40 × 59,117.16
  4. Step 4: Simplify right side
    85,689.24x = 7,585,464,680.78
  5. Step 5: Solve for x
    x = 7,585,464,680.78/85,689.24
  6. Step 6: Final answer
    x = 88,522.95

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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.