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Finding the Fourth Proportional to 74,210.65, 102,411.93 and 40,220.22

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Solution

The fourth proportional to 74,210.65, 102,411.93 and 40,220.22 is: 55,504.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,210.65 : 102,411.93 = 40,220.22 : x
  2. Step 2: Convert to fraction form
    74,210.65/102,411.93 = 40,220.22/x
  3. Step 3: Cross multiply
    74,210.65x = 102,411.93 × 40,220.22
  4. Step 4: Simplify right side
    74,210.65x = 4,119,030,890.10
  5. Step 5: Solve for x
    x = 4,119,030,890.10/74,210.65
  6. Step 6: Final answer
    x = 55,504.58

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1.5x scale

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.