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Finding the Fourth Proportional to 64,807.20, 97,210.80 and 58,240.80

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Solution

The fourth proportional to 64,807.20, 97,210.80 and 58,240.80 is: 87,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,807.20 : 97,210.80 = 58,240.80 : x
  2. Step 2: Convert to fraction form
    64,807.20/97,210.80 = 58,240.80/x
  3. Step 3: Cross multiply
    64,807.20x = 97,210.80 × 58,240.80
  4. Step 4: Simplify right side
    64,807.20x = 5,661,634,760.64
  5. Step 5: Solve for x
    x = 5,661,634,760.64/64,807.20
  6. Step 6: Final answer
    x = 87,361.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.