Home / 66,031.16-91,108.98-39,182.40

Finding the Fourth Proportional to 66,031.16, 91,108.98 and 39,182.40

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Solution

The fourth proportional to 66,031.16, 91,108.98 and 39,182.40 is: 54,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,031.16 : 91,108.98 = 39,182.40 : x
  2. Step 2: Convert to fraction form
    66,031.16/91,108.98 = 39,182.40/x
  3. Step 3: Cross multiply
    66,031.16x = 91,108.98 × 39,182.40
  4. Step 4: Simplify right side
    66,031.16x = 3,569,868,497.95
  5. Step 5: Solve for x
    x = 3,569,868,497.95/66,031.16
  6. Step 6: Final answer
    x = 54,063.40

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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.