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Finding the Fourth Proportional to 77,458.80, 106,916.04 and 45,637.98

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Solution

The fourth proportional to 77,458.80, 106,916.04 and 45,637.98 is: 62,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,458.80 : 106,916.04 = 45,637.98 : x
  2. Step 2: Convert to fraction form
    77,458.80/106,916.04 = 45,637.98/x
  3. Step 3: Cross multiply
    77,458.80x = 106,916.04 × 45,637.98
  4. Step 4: Simplify right side
    77,458.80x = 4,879,432,095.20
  5. Step 5: Solve for x
    x = 4,879,432,095.20/77,458.80
  6. Step 6: Final answer
    x = 62,993.90

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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.