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Finding the Fourth Proportional to 77,482.80, 106,977.40 and 59,545.20

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Solution

The fourth proportional to 77,482.80, 106,977.40 and 59,545.20 is: 82,211.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,482.80 : 106,977.40 = 59,545.20 : x
  2. Step 2: Convert to fraction form
    77,482.80/106,977.40 = 59,545.20/x
  3. Step 3: Cross multiply
    77,482.80x = 106,977.40 × 59,545.20
  4. Step 4: Simplify right side
    77,482.80x = 6,369,990,678.48
  5. Step 5: Solve for x
    x = 6,369,990,678.48/77,482.80
  6. Step 6: Final answer
    x = 82,211.67

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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.