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Finding the Fourth Proportional to 65,370.40, 90,210.32 and 35,562.40

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Solution

The fourth proportional to 65,370.40, 90,210.32 and 35,562.40 is: 49,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,370.40 : 90,210.32 = 35,562.40 : x
  2. Step 2: Convert to fraction form
    65,370.40/90,210.32 = 35,562.40/x
  3. Step 3: Cross multiply
    65,370.40x = 90,210.32 × 35,562.40
  4. Step 4: Simplify right side
    65,370.40x = 3,208,095,483.97
  5. Step 5: Solve for x
    x = 3,208,095,483.97/65,370.40
  6. Step 6: Final answer
    x = 49,075.66

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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.