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Finding the Fourth Proportional to 56,976,187.68, 85,404,561.84 and 21,051,482.40

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Solution

The fourth proportional to 56,976,187.68, 85,404,561.84 and 21,051,482.40 is: 31,555,158.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,976,187.68 : 85,404,561.84 = 21,051,482.40 : x
  2. Step 2: Convert to fraction form
    56,976,187.68/85,404,561.84 = 21,051,482.40/x
  3. Step 3: Cross multiply
    56,976,187.68x = 85,404,561.84 × 21,051,482.40
  4. Step 4: Simplify right side
    56,976,187.68x = 1,797,892,630,454,471.50
  5. Step 5: Solve for x
    x = 1,797,892,630,454,471.50/56,976,187.68
  6. Step 6: Final answer
    x = 31,555,158.46

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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.