Home / 66,387.58-91,573.02-39,510.04

Finding the Fourth Proportional to 66,387.58, 91,573.02 and 39,510.04

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Solution

The fourth proportional to 66,387.58, 91,573.02 and 39,510.04 is: 54,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,387.58 : 91,573.02 = 39,510.04 : x
  2. Step 2: Convert to fraction form
    66,387.58/91,573.02 = 39,510.04/x
  3. Step 3: Cross multiply
    66,387.58x = 91,573.02 × 39,510.04
  4. Step 4: Simplify right side
    66,387.58x = 3,618,053,683.12
  5. Step 5: Solve for x
    x = 3,618,053,683.12/66,387.58
  6. Step 6: Final answer
    x = 54,498.95

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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.