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Finding the Fourth Proportional to 72,338,368.03, 107,960,885.94 and 65,356,943.26

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Solution

The fourth proportional to 72,338,368.03, 107,960,885.94 and 65,356,943.26 is: 97,541,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,338,368.03 : 107,960,885.94 = 65,356,943.26 : x
  2. Step 2: Convert to fraction form
    72,338,368.03/107,960,885.94 = 65,356,943.26/x
  3. Step 3: Cross multiply
    72,338,368.03x = 107,960,885.94 × 65,356,943.26
  4. Step 4: Simplify right side
    72,338,368.03x = 7,055,993,496,402,145
  5. Step 5: Solve for x
    x = 7,055,993,496,402,145/72,338,368.03
  6. Step 6: Final answer
    x = 97,541,507.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.