Home / 70,878.21-97,816.35-39,047.10

Finding the Fourth Proportional to 70,878.21, 97,816.35 and 39,047.10

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Solution

The fourth proportional to 70,878.21, 97,816.35 and 39,047.10 is: 53,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,878.21 : 97,816.35 = 39,047.10 : x
  2. Step 2: Convert to fraction form
    70,878.21/97,816.35 = 39,047.10/x
  3. Step 3: Cross multiply
    70,878.21x = 97,816.35 × 39,047.10
  4. Step 4: Simplify right side
    70,878.21x = 3,819,444,800.09
  5. Step 5: Solve for x
    x = 3,819,444,800.09/70,878.21
  6. Step 6: Final answer
    x = 53,887.43

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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.