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Finding the Fourth Proportional to 65,415.40, 90,274.91 and 36,737.35

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Solution

The fourth proportional to 65,415.40, 90,274.91 and 36,737.35 is: 50,698.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,415.40 : 90,274.91 = 36,737.35 : x
  2. Step 2: Convert to fraction form
    65,415.40/90,274.91 = 36,737.35/x
  3. Step 3: Cross multiply
    65,415.40x = 90,274.91 × 36,737.35
  4. Step 4: Simplify right side
    65,415.40x = 3,316,460,555.51
  5. Step 5: Solve for x
    x = 3,316,460,555.51/65,415.40
  6. Step 6: Final answer
    x = 50,698.47

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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.