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Finding the Fourth Proportional to 61,461.60, 91,973.70 and 42,653.40

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Solution

The fourth proportional to 61,461.60, 91,973.70 and 42,653.40 is: 63,828.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,461.60 : 91,973.70 = 42,653.40 : x
  2. Step 2: Convert to fraction form
    61,461.60/91,973.70 = 42,653.40/x
  3. Step 3: Cross multiply
    61,461.60x = 91,973.70 × 42,653.40
  4. Step 4: Simplify right side
    61,461.60x = 3,922,991,015.58
  5. Step 5: Solve for x
    x = 3,922,991,015.58/61,461.60
  6. Step 6: Final answer
    x = 63,828.33

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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.