Home / 42,647.80-63,971.70-23,985.40

Finding the Fourth Proportional to 42,647.80, 63,971.70 and 23,985.40

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Solution

The fourth proportional to 42,647.80, 63,971.70 and 23,985.40 is: 35,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,647.80 : 63,971.70 = 23,985.40 : x
  2. Step 2: Convert to fraction form
    42,647.80/63,971.70 = 23,985.40/x
  3. Step 3: Cross multiply
    42,647.80x = 63,971.70 × 23,985.40
  4. Step 4: Simplify right side
    42,647.80x = 1,534,386,813.18
  5. Step 5: Solve for x
    x = 1,534,386,813.18/42,647.80
  6. Step 6: Final answer
    x = 35,978.10

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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.