Home / 70,739,688.72-97,620,080.40-39,377,240.40

Finding the Fourth Proportional to 70,739,688.72, 97,620,080.40 and 39,377,240.40

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Solution

The fourth proportional to 70,739,688.72, 97,620,080.40 and 39,377,240.40 is: 54,340,207.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,739,688.72 : 97,620,080.40 = 39,377,240.40 : x
  2. Step 2: Convert to fraction form
    70,739,688.72/97,620,080.40 = 39,377,240.40/x
  3. Step 3: Cross multiply
    70,739,688.72x = 97,620,080.40 × 39,377,240.40
  4. Step 4: Simplify right side
    70,739,688.72x = 3,844,009,373,778,128
  5. Step 5: Solve for x
    x = 3,844,009,373,778,128/70,739,688.72
  6. Step 6: Final answer
    x = 54,340,207.64

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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.