Home / 31,931.60-47,897.40-28,043.60

Finding the Fourth Proportional to 31,931.60, 47,897.40 and 28,043.60

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Solution

The fourth proportional to 31,931.60, 47,897.40 and 28,043.60 is: 42,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.60 : 47,897.40 = 28,043.60 : x
  2. Step 2: Convert to fraction form
    31,931.60/47,897.40 = 28,043.60/x
  3. Step 3: Cross multiply
    31,931.60x = 47,897.40 × 28,043.60
  4. Step 4: Simplify right side
    31,931.60x = 1,343,215,526.64
  5. Step 5: Solve for x
    x = 1,343,215,526.64/31,931.60
  6. Step 6: Final answer
    x = 42,065.40

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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.