Home / 78,600.08-108,466.98-42,790.36

Finding the Fourth Proportional to 78,600.08, 108,466.98 and 42,790.36

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Solution

The fourth proportional to 78,600.08, 108,466.98 and 42,790.36 is: 59,050.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,600.08 : 108,466.98 = 42,790.36 : x
  2. Step 2: Convert to fraction form
    78,600.08/108,466.98 = 42,790.36/x
  3. Step 3: Cross multiply
    78,600.08x = 108,466.98 × 42,790.36
  4. Step 4: Simplify right side
    78,600.08x = 4,641,341,122.31
  5. Step 5: Solve for x
    x = 4,641,341,122.31/78,600.08
  6. Step 6: Final answer
    x = 59,050.08

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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.