Home / 40,011,130.71-55,215,416.41-21,676,416.21

Finding the Fourth Proportional to 40,011,130.71, 55,215,416.41 and 21,676,416.21

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Solution

The fourth proportional to 40,011,130.71, 55,215,416.41 and 21,676,416.21 is: 29,913,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,011,130.71 : 55,215,416.41 = 21,676,416.21 : x
  2. Step 2: Convert to fraction form
    40,011,130.71/55,215,416.41 = 21,676,416.21/x
  3. Step 3: Cross multiply
    40,011,130.71x = 55,215,416.41 × 21,676,416.21
  4. Step 4: Simplify right side
    40,011,130.71x = 1,196,872,347,257,433
  5. Step 5: Solve for x
    x = 1,196,872,347,257,433/40,011,130.71
  6. Step 6: Final answer
    x = 29,913,484.72

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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.