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Finding the Fourth Proportional to 74,914,283.20, 112,371,424.80 and 70,435,307.20

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Solution

The fourth proportional to 74,914,283.20, 112,371,424.80 and 70,435,307.20 is: 105,652,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,914,283.20 : 112,371,424.80 = 70,435,307.20 : x
  2. Step 2: Convert to fraction form
    74,914,283.20/112,371,424.80 = 70,435,307.20/x
  3. Step 3: Cross multiply
    74,914,283.20x = 112,371,424.80 × 70,435,307.20
  4. Step 4: Simplify right side
    74,914,283.20x = 7,914,915,826,289,699
  5. Step 5: Solve for x
    x = 7,914,915,826,289,699/74,914,283.20
  6. Step 6: Final answer
    x = 105,652,960.80

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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.