Home / 52,742.60-72,784.86-28,870.78

Finding the Fourth Proportional to 52,742.60, 72,784.86 and 28,870.78

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Solution

The fourth proportional to 52,742.60, 72,784.86 and 28,870.78 is: 39,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,742.60 : 72,784.86 = 28,870.78 : x
  2. Step 2: Convert to fraction form
    52,742.60/72,784.86 = 28,870.78/x
  3. Step 3: Cross multiply
    52,742.60x = 72,784.86 × 28,870.78
  4. Step 4: Simplify right side
    52,742.60x = 2,101,355,498.43
  5. Step 5: Solve for x
    x = 2,101,355,498.43/52,742.60
  6. Step 6: Final answer
    x = 39,841.72

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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.