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Finding the Fourth Proportional to 64,937,729.80, 97,406,594.70 and 19,493,619.40

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Solution

The fourth proportional to 64,937,729.80, 97,406,594.70 and 19,493,619.40 is: 29,240,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,937,729.80 : 97,406,594.70 = 19,493,619.40 : x
  2. Step 2: Convert to fraction form
    64,937,729.80/97,406,594.70 = 19,493,619.40/x
  3. Step 3: Cross multiply
    64,937,729.80x = 97,406,594.70 × 19,493,619.40
  4. Step 4: Simplify right side
    64,937,729.80x = 1,898,807,084,131,857
  5. Step 5: Solve for x
    x = 1,898,807,084,131,857/64,937,729.80
  6. Step 6: Final answer
    x = 29,240,429.10

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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.