Home / 61,918.40-85,441.56-42,818.60

Finding the Fourth Proportional to 61,918.40, 85,441.56 and 42,818.60

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Solution

The fourth proportional to 61,918.40, 85,441.56 and 42,818.60 is: 59,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,918.40 : 85,441.56 = 42,818.60 : x
  2. Step 2: Convert to fraction form
    61,918.40/85,441.56 = 42,818.60/x
  3. Step 3: Cross multiply
    61,918.40x = 85,441.56 × 42,818.60
  4. Step 4: Simplify right side
    61,918.40x = 3,658,487,981.02
  5. Step 5: Solve for x
    x = 3,658,487,981.02/61,918.40
  6. Step 6: Final answer
    x = 59,085.63

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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.