Home / 52,209.72-78,312.12-12,764.70

Finding the Fourth Proportional to 52,209.72, 78,312.12 and 12,764.70

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Solution

The fourth proportional to 52,209.72, 78,312.12 and 12,764.70 is: 19,146.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,209.72 : 78,312.12 = 12,764.70 : x
  2. Step 2: Convert to fraction form
    52,209.72/78,312.12 = 12,764.70/x
  3. Step 3: Cross multiply
    52,209.72x = 78,312.12 × 12,764.70
  4. Step 4: Simplify right side
    52,209.72x = 999,630,718.16
  5. Step 5: Solve for x
    x = 999,630,718.16/52,209.72
  6. Step 6: Final answer
    x = 19,146.45

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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.