Home / 78,477,411.60-117,716,117.40-61,452,637.20

Finding the Fourth Proportional to 78,477,411.60, 117,716,117.40 and 61,452,637.20

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Solution

The fourth proportional to 78,477,411.60, 117,716,117.40 and 61,452,637.20 is: 92,178,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,477,411.60 : 117,716,117.40 = 61,452,637.20 : x
  2. Step 2: Convert to fraction form
    78,477,411.60/117,716,117.40 = 61,452,637.20/x
  3. Step 3: Cross multiply
    78,477,411.60x = 117,716,117.40 × 61,452,637.20
  4. Step 4: Simplify right side
    78,477,411.60x = 7,233,965,855,174,808
  5. Step 5: Solve for x
    x = 7,233,965,855,174,808/78,477,411.60
  6. Step 6: Final answer
    x = 92,178,955.80

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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.