Home / 64,897.20-97,345.80-42,778.80

Finding the Fourth Proportional to 64,897.20, 97,345.80 and 42,778.80

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Solution

The fourth proportional to 64,897.20, 97,345.80 and 42,778.80 is: 64,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,897.20 : 97,345.80 = 42,778.80 : x
  2. Step 2: Convert to fraction form
    64,897.20/97,345.80 = 42,778.80/x
  3. Step 3: Cross multiply
    64,897.20x = 97,345.80 × 42,778.80
  4. Step 4: Simplify right side
    64,897.20x = 4,164,336,509.04
  5. Step 5: Solve for x
    x = 4,164,336,509.04/64,897.20
  6. Step 6: Final answer
    x = 64,168.20

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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.