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Finding the Fourth Proportional to 52,465,133.60, 78,697,700.40 and 42,891,322.40

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Solution

The fourth proportional to 52,465,133.60, 78,697,700.40 and 42,891,322.40 is: 64,336,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,465,133.60 : 78,697,700.40 = 42,891,322.40 : x
  2. Step 2: Convert to fraction form
    52,465,133.60/78,697,700.40 = 42,891,322.40/x
  3. Step 3: Cross multiply
    52,465,133.60x = 78,697,700.40 × 42,891,322.40
  4. Step 4: Simplify right side
    52,465,133.60x = 3,375,448,439,995,009
  5. Step 5: Solve for x
    x = 3,375,448,439,995,009/52,465,133.60
  6. Step 6: Final answer
    x = 64,336,983.60

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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.