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Finding the Fourth Proportional to 70,038.74, 104,970.63 and 45,012.17

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Solution

The fourth proportional to 70,038.74, 104,970.63 and 45,012.17 is: 67,462.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,038.74 : 104,970.63 = 45,012.17 : x
  2. Step 2: Convert to fraction form
    70,038.74/104,970.63 = 45,012.17/x
  3. Step 3: Cross multiply
    70,038.74x = 104,970.63 × 45,012.17
  4. Step 4: Simplify right side
    70,038.74x = 4,724,955,842.57
  5. Step 5: Solve for x
    x = 4,724,955,842.57/70,038.74
  6. Step 6: Final answer
    x = 67,462.03

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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.