Home / 74,421.84-102,702.27-40,430.46

Finding the Fourth Proportional to 74,421.84, 102,702.27 and 40,430.46

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Solution

The fourth proportional to 74,421.84, 102,702.27 and 40,430.46 is: 55,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,421.84 : 102,702.27 = 40,430.46 : x
  2. Step 2: Convert to fraction form
    74,421.84/102,702.27 = 40,430.46/x
  3. Step 3: Cross multiply
    74,421.84x = 102,702.27 × 40,430.46
  4. Step 4: Simplify right side
    74,421.84x = 4,152,300,019.14
  5. Step 5: Solve for x
    x = 4,152,300,019.14/74,421.84
  6. Step 6: Final answer
    x = 55,794.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.