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Finding the Fourth Proportional to 65,220.50, 89,802.77 and 50,938.04

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Solution

The fourth proportional to 65,220.50, 89,802.77 and 50,938.04 is: 70,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,220.50 : 89,802.77 = 50,938.04 : x
  2. Step 2: Convert to fraction form
    65,220.50/89,802.77 = 50,938.04/x
  3. Step 3: Cross multiply
    65,220.50x = 89,802.77 × 50,938.04
  4. Step 4: Simplify right side
    65,220.50x = 4,574,376,386.67
  5. Step 5: Solve for x
    x = 4,574,376,386.67/65,220.50
  6. Step 6: Final answer
    x = 70,137.10

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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.