Home / 65,677,663.08-90,620,138.52-39,210,865.92

Finding the Fourth Proportional to 65,677,663.08, 90,620,138.52 and 39,210,865.92

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Solution

The fourth proportional to 65,677,663.08, 90,620,138.52 and 39,210,865.92 is: 54,102,017.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,677,663.08 : 90,620,138.52 = 39,210,865.92 : x
  2. Step 2: Convert to fraction form
    65,677,663.08/90,620,138.52 = 39,210,865.92/x
  3. Step 3: Cross multiply
    65,677,663.08x = 90,620,138.52 × 39,210,865.92
  4. Step 4: Simplify right side
    65,677,663.08x = 3,553,294,101,159,547
  5. Step 5: Solve for x
    x = 3,553,294,101,159,547/65,677,663.08
  6. Step 6: Final answer
    x = 54,102,017.86

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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.