Home / 40,152,931.68-55,411,396.32-21,818,216.64

Finding the Fourth Proportional to 40,152,931.68, 55,411,396.32 and 21,818,216.64

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Solution

The fourth proportional to 40,152,931.68, 55,411,396.32 and 21,818,216.64 is: 30,109,329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,152,931.68 : 55,411,396.32 = 21,818,216.64 : x
  2. Step 2: Convert to fraction form
    40,152,931.68/55,411,396.32 = 21,818,216.64/x
  3. Step 3: Cross multiply
    40,152,931.68x = 55,411,396.32 × 21,818,216.64
  4. Step 4: Simplify right side
    40,152,931.68x = 1,208,977,849,234,658.75
  5. Step 5: Solve for x
    x = 1,208,977,849,234,658.75/40,152,931.68
  6. Step 6: Final answer
    x = 30,109,329.47

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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.