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Finding the Fourth Proportional to 72,107.96, 99,501.17 and 43,030.96

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Solution

The fourth proportional to 72,107.96, 99,501.17 and 43,030.96 is: 59,378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,107.96 : 99,501.17 = 43,030.96 : x
  2. Step 2: Convert to fraction form
    72,107.96/99,501.17 = 43,030.96/x
  3. Step 3: Cross multiply
    72,107.96x = 99,501.17 × 43,030.96
  4. Step 4: Simplify right side
    72,107.96x = 4,281,630,866.22
  5. Step 5: Solve for x
    x = 4,281,630,866.22/72,107.96
  6. Step 6: Final answer
    x = 59,378.06

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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.