Home / 81,378,176.92-112,236,934.98-53,529,487.72

Finding the Fourth Proportional to 81,378,176.92, 112,236,934.98 and 53,529,487.72

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Solution

The fourth proportional to 81,378,176.92, 112,236,934.98 and 53,529,487.72 is: 73,827,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,378,176.92 : 112,236,934.98 = 53,529,487.72 : x
  2. Step 2: Convert to fraction form
    81,378,176.92/112,236,934.98 = 53,529,487.72/x
  3. Step 3: Cross multiply
    81,378,176.92x = 112,236,934.98 × 53,529,487.72
  4. Step 4: Simplify right side
    81,378,176.92x = 6,007,985,632,742,349
  5. Step 5: Solve for x
    x = 6,007,985,632,742,349/81,378,176.92
  6. Step 6: Final answer
    x = 73,827,970.35

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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.