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Finding the Fourth Proportional to 72,609,569.05, 101,908,488.35 and 72,609,569.05

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Solution

The fourth proportional to 72,609,569.05, 101,908,488.35 and 72,609,569.05 is: 101,908,488.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609,569.05 : 101,908,488.35 = 72,609,569.05 : x
  2. Step 2: Convert to fraction form
    72,609,569.05/101,908,488.35 = 72,609,569.05/x
  3. Step 3: Cross multiply
    72,609,569.05x = 101,908,488.35 × 72,609,569.05
  4. Step 4: Simplify right side
    72,609,569.05x = 7,399,531,421,630,445
  5. Step 5: Solve for x
    x = 7,399,531,421,630,445/72,609,569.05
  6. Step 6: Final answer
    x = 101,908,488.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.