Home / 72,999.02-109,499.45-28,646.66

Finding the Fourth Proportional to 72,999.02, 109,499.45 and 28,646.66

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Solution

The fourth proportional to 72,999.02, 109,499.45 and 28,646.66 is: 42,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,999.02 : 109,499.45 = 28,646.66 : x
  2. Step 2: Convert to fraction form
    72,999.02/109,499.45 = 28,646.66/x
  3. Step 3: Cross multiply
    72,999.02x = 109,499.45 × 28,646.66
  4. Step 4: Simplify right side
    72,999.02x = 3,136,793,644.85
  5. Step 5: Solve for x
    x = 3,136,793,644.85/72,999.02
  6. Step 6: Final answer
    x = 42,970.35

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1.5x scale

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.