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Finding the Fourth Proportional to 60,779.57, 83,838.51 and 40,362.50

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Solution

The fourth proportional to 60,779.57, 83,838.51 and 40,362.50 is: 55,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,779.57 : 83,838.51 = 40,362.50 : x
  2. Step 2: Convert to fraction form
    60,779.57/83,838.51 = 40,362.50/x
  3. Step 3: Cross multiply
    60,779.57x = 83,838.51 × 40,362.50
  4. Step 4: Simplify right side
    60,779.57x = 3,383,932,069.47
  5. Step 5: Solve for x
    x = 3,383,932,069.47/60,779.57
  6. Step 6: Final answer
    x = 55,675.49

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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.