Home / 51,839.20-77,758.80-47,538.40

Finding the Fourth Proportional to 51,839.20, 77,758.80 and 47,538.40

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Solution

The fourth proportional to 51,839.20, 77,758.80 and 47,538.40 is: 71,307.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,839.20 : 77,758.80 = 47,538.40 : x
  2. Step 2: Convert to fraction form
    51,839.20/77,758.80 = 47,538.40/x
  3. Step 3: Cross multiply
    51,839.20x = 77,758.80 × 47,538.40
  4. Step 4: Simplify right side
    51,839.20x = 3,696,528,937.92
  5. Step 5: Solve for x
    x = 3,696,528,937.92/51,839.20
  6. Step 6: Final answer
    x = 71,307.60

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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.