Home / 72,421.40-108,632.10-47,538.20

Finding the Fourth Proportional to 72,421.40, 108,632.10 and 47,538.20

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Solution

The fourth proportional to 72,421.40, 108,632.10 and 47,538.20 is: 71,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,421.40 : 108,632.10 = 47,538.20 : x
  2. Step 2: Convert to fraction form
    72,421.40/108,632.10 = 47,538.20/x
  3. Step 3: Cross multiply
    72,421.40x = 108,632.10 × 47,538.20
  4. Step 4: Simplify right side
    72,421.40x = 5,164,174,496.22
  5. Step 5: Solve for x
    x = 5,164,174,496.22/72,421.40
  6. Step 6: Final answer
    x = 71,307.30

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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.