Home / 74,136.60-102,308.40-40,602.60

Finding the Fourth Proportional to 74,136.60, 102,308.40 and 40,602.60

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Solution

The fourth proportional to 74,136.60, 102,308.40 and 40,602.60 is: 56,031.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,136.60 : 102,308.40 = 40,602.60 : x
  2. Step 2: Convert to fraction form
    74,136.60/102,308.40 = 40,602.60/x
  3. Step 3: Cross multiply
    74,136.60x = 102,308.40 × 40,602.60
  4. Step 4: Simplify right side
    74,136.60x = 4,153,987,041.84
  5. Step 5: Solve for x
    x = 4,153,987,041.84/74,136.60
  6. Step 6: Final answer
    x = 56,031.53

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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.